Springfield Spring-Lock Boat Seat Power PedestalsUpgrade your boat's seating with the Springfield boat seat pedestal, designed for durability and smooth height adjustment. This Springfield marine pedestal is built with corrosion-resistant aluminum to ensure stability and comfort on the water. The Spring-Lock mechanism provides a secure fit, preventing unwanted movement, while the power-adjust feature allows easy customization. It's ideal for fishing boats and recreational vessels and delivers a reliable and sturdy seating experience. Whether replacing an old pedestal or upgrading for better functionality, this high-quality Springfield option is a must-have for boaters looking for comfort and control. Choose between two sizes. Fits Spring-Lock base 1640002.Springfield's "Spring-Lock" power pedestals use a unique design utilizing compressed gas to adjust pedestal height. Fits "Spring-Lock" base 1640002.; Two sizes available for any application.; Features: 9a ^2 Diameter Satin Base; 8a ^2 hole pattern, high-strength aluminum.; Below the deck mount (requires a 4a ^2 hole in deck.); Use with any Spring-Lock or Clip-Lock post, (sold separately); Warranty: 5 Years